git.sur5r.net Git - openldap/blob - servers/slapd/result.c

   1 /* result.c - routines to send ldap results, errors, and referrals */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2008 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/socket.h>
  32 #include <ac/errno.h>
  33 #include <ac/string.h>
  34 #include <ac/ctype.h>
  35 #include <ac/time.h>
  36 #include <ac/unistd.h>
  37
  38 #include "slap.h"
  39
  40 const struct berval slap_dummy_bv = BER_BVNULL;
  41
  42 int slap_null_cb( Operation *op, SlapReply *rs )
  43 {
  44         return 0;
  45 }
  46
  47 int slap_freeself_cb( Operation *op, SlapReply *rs )
  48 {
  49         assert( op->o_callback != NULL );
  50
  51         op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
  52         op->o_callback = NULL;
  53
  54         return SLAP_CB_CONTINUE;
  55 }
  56
  57 static char *v2ref( BerVarray ref, const char *text )
  58 {
  59         size_t len = 0, i = 0;
  60         char *v2;
  61
  62         if(ref == NULL) {
  63                 if (text) {
  64                         return ch_strdup(text);
  65                 } else {
  66                         return NULL;
  67                 }
  68         }
  69
  70         if ( text != NULL ) {
  71                 len = strlen( text );
  72                 if (text[len-1] != '\n') {
  73                     i = 1;
  74                 }
  75         }
  76
  77         v2 = ch_malloc( len+i+sizeof("Referral:") );
  78
  79         if( text != NULL ) {
  80                 strcpy(v2, text);
  81                 if( i ) {
  82                         v2[len++] = '\n';
  83                 }
  84         }
  85         strcpy( v2+len, "Referral:" );
  86         len += sizeof("Referral:");
  87
  88         for( i=0; ref[i].bv_val != NULL; i++ ) {
  89                 v2 = ch_realloc( v2, len + ref[i].bv_len + 1 );
  90                 v2[len-1] = '\n';
  91                 AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
  92                 len += ref[i].bv_len;
  93                 if (ref[i].bv_val[ref[i].bv_len-1] != '/') {
  94                         ++len;
  95                 }
  96         }
  97
  98         v2[len-1] = '\0';
  99         return v2;
 100 }
 101
 102 ber_tag_t
 103 slap_req2res( ber_tag_t tag )
 104 {
 105         switch( tag ) {
 106         case LDAP_REQ_ADD:
 107         case LDAP_REQ_BIND:
 108         case LDAP_REQ_COMPARE:
 109         case LDAP_REQ_EXTENDED:
 110         case LDAP_REQ_MODIFY:
 111         case LDAP_REQ_MODRDN:
 112                 tag++;
 113                 break;
 114
 115         case LDAP_REQ_DELETE:
 116                 tag = LDAP_RES_DELETE;
 117                 break;
 118
 119         case LDAP_REQ_ABANDON:
 120         case LDAP_REQ_UNBIND:
 121                 tag = LBER_SEQUENCE;
 122                 break;
 123
 124         case LDAP_REQ_SEARCH:
 125                 tag = LDAP_RES_SEARCH_RESULT;
 126                 break;
 127
 128         default:
 129                 tag = LBER_SEQUENCE;
 130         }
 131
 132         return tag;
 133 }
 134
 135 static long send_ldap_ber(
 136         Connection *conn,
 137         BerElement *ber )
 138 {
 139         ber_len_t bytes;
 140         long ret = 0;
 141         int closing = 0;
 142
 143         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 144
 145         /* write only one pdu at a time - wait til it's our turn */
 146         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 147         while ( conn->c_writers > 0 ) {
 148                 ldap_pvt_thread_cond_wait( &conn->c_write1_cv, &conn->c_write1_mutex );
 149         }
 150         /* connection was closed under us */
 151         if ( conn->c_writers < 0 ) {
 152                 closing = 1;
 153                 /* we're the last waiter, let the closer continue */
 154                 if ( conn->c_writers == -1 )
 155                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 156         }
 157
 158         conn->c_writers++;
 159         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 160
 161         if ( closing )
 162                 return 0;
 163
 164         /* write the pdu */
 165         while( 1 ) {
 166                 int err;
 167
 168                 /* lock the connection */
 169                 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 170
 171                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 172                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 173                         ret = bytes;
 174                         break;
 175                 }
 176
 177                 err = sock_errno();
 178
 179                 /*
 180                  * we got an error.  if it's ewouldblock, we need to
 181                  * wait on the socket being writable.  otherwise, figure
 182                  * it's a hard error and return.
 183                  */
 184
 185                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 186                     err, sock_errstr(err), 0 );
 187
 188                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 189                         connection_closing( conn, "connection lost on write" );
 190
 191                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 192
 193                         ret = -1;
 194                         break;
 195                 }
 196
 197                 /* wait for socket to be write-ready */
 198                 ldap_pvt_thread_mutex_lock( &conn->c_write2_mutex );
 199                 conn->c_writewaiter = 1;
 200                 slapd_set_write( conn->c_sd, 1 );
 201
 202                 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 203                 ldap_pvt_thread_cond_wait( &conn->c_write2_cv, &conn->c_write2_mutex );
 204                 conn->c_writewaiter = 0;
 205                 ldap_pvt_thread_mutex_unlock( &conn->c_write2_mutex );
 206                 ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 207                 closing = ( conn->c_writers < 0 );
 208                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 209                 if ( closing ) {
 210                         ret = 0;
 211                         break;
 212                 }
 213         }
 214
 215         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 216         if ( conn->c_writers < 0 ) {
 217                 conn->c_writers++;
 218                 if ( !conn->c_writers )
 219                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 220         } else {
 221                 conn->c_writers--;
 222                 ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 223         }
 224         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 225
 226         return ret;
 227 }
 228
 229 static int
 230 send_ldap_control( BerElement *ber, LDAPControl *c )
 231 {
 232         int rc;
 233
 234         assert( c != NULL );
 235
 236         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 237
 238         if( c->ldctl_iscritical ) {
 239                 rc = ber_printf( ber, "b",
 240                         (ber_int_t) c->ldctl_iscritical ) ;
 241                 if( rc == -1 ) return rc;
 242         }
 243
 244         if( c->ldctl_value.bv_val != NULL ) {
 245                 rc = ber_printf( ber, "O", &c->ldctl_value );
 246                 if( rc == -1 ) return rc;
 247         }
 248
 249         rc = ber_printf( ber, /*{*/"N}" );
 250         if( rc == -1 ) return rc;
 251
 252         return 0;
 253 }
 254
 255 static int
 256 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 257 {
 258         int rc;
 259
 260         if( c == NULL )
 261                 return 0;
 262
 263         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 264         if( rc == -1 ) return rc;
 265
 266         for( ; *c != NULL; c++) {
 267                 rc = send_ldap_control( ber, *c );
 268                 if( rc == -1 ) return rc;
 269         }
 270
 271 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 272         /* this is a hack to avoid having to modify op->s_ctrls */
 273         if( o->o_sortedresults ) {
 274                 BerElementBuffer berbuf;
 275                 BerElement *sber = (BerElement *) &berbuf;
 276                 LDAPControl sorted;
 277                 BER_BVZERO( &sorted.ldctl_value );
 278                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 279                 sorted.ldctl_iscritical = 0;
 280
 281                 ber_init2( sber, NULL, LBER_USE_DER );
 282
 283                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 284
 285                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 286                         return -1;
 287                 }
 288
 289                 (void) ber_free_buf( ber );
 290
 291                 rc = send_ldap_control( ber, &sorted );
 292                 if( rc == -1 ) return rc;
 293         }
 294 #endif
 295
 296         rc = ber_printf( ber, /*{*/"N}" );
 297
 298         return rc;
 299 }
 300
 301 /*
 302  * slap_response_play()
 303  *
 304  * plays the callback list; rationale: a callback can
 305  *   - remove itself from the list, by setting op->o_callback = NULL;
 306  *     malloc()'ed callbacks should free themselves from inside the
 307  *     sc_response() function.
 308  *   - replace itself with another (list of) callback(s), by setting
 309  *     op->o_callback = a new (list of) callback(s); in this case, it
 310  *     is the callback's responsibility to to append existing subsequent
 311  *     callbacks to the end of the list that is passed to the sc_response()
 312  *     function.
 313  *   - modify the list of subsequent callbacks by modifying the value
 314  *     of the sc_next field from inside the sc_response() function; this
 315  *     case does not require any handling from inside slap_response_play()
 316  *
 317  * To stop execution of the playlist, the sc_response() function must return
 318  * a value different from SLAP_SC_CONTINUE.
 319  *
 320  * The same applies to slap_cleanup_play(); only, there is no means to stop
 321  * execution of the playlist, since all cleanup functions must be called.
 322  */
 323 static int
 324 slap_response_play(
 325         Operation *op,
 326         SlapReply *rs )
 327 {
 328         int rc;
 329
 330         slap_callback   *sc = op->o_callback, **scp;
 331
 332         rc = SLAP_CB_CONTINUE;
 333         for ( scp = &sc; *scp; ) {
 334                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 335
 336                 op->o_callback = *scp;
 337                 if ( op->o_callback->sc_response ) {
 338                         rc = op->o_callback->sc_response( op, rs );
 339                         if ( op->o_callback == NULL ) {
 340                                 /* the callback has been removed;
 341                                  * repair the list */
 342                                 *scp = sc_next;
 343                                 sc_nextp = scp;
 344
 345                         } else if ( op->o_callback != *scp ) {
 346                                 /* a new callback has been inserted
 347                                  * in place of the existing one; repair the list */
 348                                 *scp = op->o_callback;
 349                                 sc_nextp = scp;
 350                         }
 351                         if ( rc != SLAP_CB_CONTINUE ) break;
 352                 }
 353                 scp = sc_nextp;
 354         }
 355
 356         op->o_callback = sc;
 357         return rc;
 358 }
 359
 360 static int
 361 slap_cleanup_play(
 362         Operation *op,
 363         SlapReply *rs )
 364 {
 365         slap_callback   *sc = op->o_callback, **scp;
 366
 367         for ( scp = &sc; *scp; ) {
 368                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 369
 370                 op->o_callback = *scp;
 371                 if ( op->o_callback->sc_cleanup ) {
 372                         (void)op->o_callback->sc_cleanup( op, rs );
 373                         if ( op->o_callback == NULL ) {
 374                                 /* the callback has been removed;
 375                                  * repair the list */
 376                                 *scp = sc_next;
 377                                 sc_nextp = scp;
 378
 379                         } else if ( op->o_callback != *scp ) {
 380                                 /* a new callback has been inserted
 381                                  * after the existing one; repair the list */
 382                                 /* a new callback has been inserted
 383                                  * in place of the existing one; repair the list */
 384                                 *scp = op->o_callback;
 385                                 sc_nextp = scp;
 386                         }
 387                         /* don't care about the result; do all cleanup */
 388                 }
 389                 scp = sc_nextp;
 390         }
 391
 392         op->o_callback = sc;
 393         return LDAP_SUCCESS;
 394 }
 395
 396 static int
 397 send_ldap_response(
 398         Operation *op,
 399         SlapReply *rs )
 400 {
 401         BerElementBuffer berbuf;
 402         BerElement      *ber = (BerElement *) &berbuf;
 403         int             rc = LDAP_SUCCESS;
 404         long    bytes;
 405
 406         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) {
 407                 rc = SLAPD_ABANDON;
 408                 goto clean2;
 409         }
 410
 411         if ( op->o_callback ) {
 412                 rc = slap_response_play( op, rs );
 413                 if ( rc != SLAP_CB_CONTINUE ) {
 414                         goto clean2;
 415                 }
 416         }
 417
 418 #ifdef LDAP_CONNECTIONLESS
 419         if (op->o_conn && op->o_conn->c_is_udp)
 420                 ber = op->o_res_ber;
 421         else
 422 #endif
 423         {
 424                 ber_init_w_nullc( ber, LBER_USE_DER );
 425                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 426         }
 427
 428         Debug( LDAP_DEBUG_TRACE,
 429                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 430                 rs->sr_msgid, rs->sr_tag, rs->sr_err );
 431
 432         if( rs->sr_ref ) {
 433                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 434                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 435                         NULL, NULL );
 436         }
 437
 438 #ifdef LDAP_CONNECTIONLESS
 439         if (op->o_conn && op->o_conn->c_is_udp &&
 440                 op->o_protocol == LDAP_VERSION2 )
 441         {
 442                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 443                         rs->sr_tag, rs->sr_err,
 444                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 445                 rs->sr_text == NULL ? "" : rs->sr_text );
 446         } else
 447 #endif
 448         if ( rs->sr_type == REP_INTERMEDIATE ) {
 449             rc = ber_printf( ber, "{it{" /*"}}"*/,
 450                         rs->sr_msgid, rs->sr_tag );
 451
 452         } else {
 453             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 454                 rs->sr_msgid, rs->sr_tag, rs->sr_err,
 455                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 456                 rs->sr_text == NULL ? "" : rs->sr_text );
 457         }
 458
 459         if( rc != -1 ) {
 460                 if ( rs->sr_ref != NULL ) {
 461                         assert( rs->sr_err == LDAP_REFERRAL );
 462                         rc = ber_printf( ber, "t{W}",
 463                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 464                 } else {
 465                         assert( rs->sr_err != LDAP_REFERRAL );
 466                 }
 467         }
 468
 469         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 470                 rc = ber_printf( ber, "tO",
 471                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 472         }
 473
 474         if( rc != -1 &&
 475                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 476         {
 477                 if ( rs->sr_rspoid != NULL ) {
 478                         rc = ber_printf( ber, "ts",
 479                                 rs->sr_type == REP_EXTENDED
 480                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 481                                 rs->sr_rspoid );
 482                 }
 483                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 484                         rc = ber_printf( ber, "tO",
 485                                 rs->sr_type == REP_EXTENDED
 486                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 487                                 rs->sr_rspdata );
 488                 }
 489         }
 490
 491         if( rc != -1 ) {
 492                 rc = ber_printf( ber, /*"{"*/ "N}" );
 493         }
 494
 495         if( rc != -1 ) {
 496                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 497         }
 498
 499         if( rc != -1 ) {
 500                 rc = ber_printf( ber, /*"{"*/ "N}" );
 501         }
 502
 503 #ifdef LDAP_CONNECTIONLESS
 504         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 505                 && rc != -1 )
 506         {
 507                 rc = ber_printf( ber, /*"{"*/ "N}" );
 508         }
 509 #endif
 510
 511         if ( rc == -1 ) {
 512                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 513
 514 #ifdef LDAP_CONNECTIONLESS
 515                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 516 #endif
 517                 {
 518                         ber_free_buf( ber );
 519                 }
 520                 goto cleanup;
 521         }
 522
 523         /* send BER */
 524         bytes = send_ldap_ber( op->o_conn, ber );
 525 #ifdef LDAP_CONNECTIONLESS
 526         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 527 #endif
 528         {
 529                 ber_free_buf( ber );
 530         }
 531
 532         if ( bytes < 0 ) {
 533                 Debug( LDAP_DEBUG_ANY,
 534                         "send_ldap_response: ber write failed\n",
 535                         0, 0, 0 );
 536
 537                 goto cleanup;
 538         }
 539
 540         ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
 541         ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
 542         ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
 543         ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
 544
 545 cleanup:;
 546         /* Tell caller that we did this for real, as opposed to being
 547          * overridden by a callback
 548          */
 549         rc = SLAP_CB_CONTINUE;
 550
 551 clean2:;
 552         if ( op->o_callback ) {
 553                 (void)slap_cleanup_play( op, rs );
 554         }
 555
 556         if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 557                 rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
 558                 if ( rs->sr_matched ) {
 559                         free( (char *)rs->sr_matched );
 560                         rs->sr_matched = NULL;
 561                 }
 562         }
 563
 564         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 565                 rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
 566                 if ( rs->sr_ref ) {
 567                         ber_bvarray_free( rs->sr_ref );
 568                         rs->sr_ref = NULL;
 569                 }
 570         }
 571
 572         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
 573                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
 574                 if ( rs->sr_ctrls ) {
 575                         slap_free_ctrls( op, rs->sr_ctrls );
 576                         rs->sr_ctrls = NULL;
 577                 }
 578         }
 579
 580         return rc;
 581 }
 582
 583
 584 void
 585 send_ldap_disconnect( Operation *op, SlapReply *rs )
 586 {
 587 #define LDAP_UNSOLICITED_ERROR(e) \
 588         (  (e) == LDAP_PROTOCOL_ERROR \
 589         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 590         || (e) == LDAP_UNAVAILABLE )
 591
 592         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 593
 594         rs->sr_type = REP_EXTENDED;
 595
 596         Debug( LDAP_DEBUG_TRACE,
 597                 "send_ldap_disconnect %d:%s\n",
 598                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 599
 600         if ( op->o_protocol < LDAP_VERSION3 ) {
 601                 rs->sr_rspoid = NULL;
 602                 rs->sr_tag = slap_req2res( op->o_tag );
 603                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 604
 605         } else {
 606                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 607                 rs->sr_tag = LDAP_RES_EXTENDED;
 608                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 609         }
 610
 611         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 612                 Statslog( LDAP_DEBUG_STATS,
 613                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 614                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 615                         rs->sr_text ? rs->sr_text : "", 0 );
 616         }
 617 }
 618
 619 void
 620 slap_send_ldap_result( Operation *op, SlapReply *rs )
 621 {
 622         char *tmp = NULL;
 623         const char *otext = rs->sr_text;
 624         BerVarray oref = rs->sr_ref;
 625
 626         rs->sr_type = REP_RESULT;
 627
 628         /* Propagate Abandons so that cleanup callbacks can be processed */
 629         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 630                 goto abandon;
 631
 632         assert( !LDAP_API_ERROR( rs->sr_err ) );
 633
 634         Debug( LDAP_DEBUG_TRACE,
 635                 "send_ldap_result: %s p=%d\n",
 636                 op->o_log_prefix, op->o_protocol, 0 );
 637
 638         Debug( LDAP_DEBUG_ARGS,
 639                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 640                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 641                 rs->sr_text ? rs->sr_text : "" );
 642
 643
 644         if( rs->sr_ref ) {
 645                 Debug( LDAP_DEBUG_ARGS,
 646                         "send_ldap_result: referral=\"%s\"\n",
 647                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 648                         NULL, NULL );
 649         }
 650
 651         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 652
 653         if ( rs->sr_err == LDAP_REFERRAL ) {
 654                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 655
 656                 if( rs->sr_ref == NULL ) {
 657                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 658                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 659                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 660                 }
 661         }
 662
 663         if ( op->o_protocol < LDAP_VERSION3 ) {
 664                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 665                 rs->sr_text = tmp;
 666                 rs->sr_ref = NULL;
 667         }
 668
 669 abandon:
 670         rs->sr_tag = slap_req2res( op->o_tag );
 671         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 672
 673         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 674                 if ( rs->sr_ref == NULL ) {
 675                         rs->sr_flags ^= REP_REF_MUSTBEFREED;
 676                         ber_bvarray_free( oref );
 677                 }
 678                 oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
 679         }
 680
 681         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 682                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 683                         Statslog( LDAP_DEBUG_STATS,
 684                                 "%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
 685                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 686                                 rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
 687                 } else {
 688                         Statslog( LDAP_DEBUG_STATS,
 689                                 "%s RESULT tag=%lu err=%d text=%s\n",
 690                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 691                                 rs->sr_text ? rs->sr_text : "", 0 );
 692                 }
 693         }
 694
 695         if( tmp != NULL ) ch_free(tmp);
 696         rs->sr_text = otext;
 697         rs->sr_ref = oref;
 698 }
 699
 700 void
 701 send_ldap_sasl( Operation *op, SlapReply *rs )
 702 {
 703         rs->sr_type = REP_SASL;
 704         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 705                 rs->sr_err,
 706                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 707
 708         rs->sr_tag = slap_req2res( op->o_tag );
 709         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 710
 711         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 712                 Statslog( LDAP_DEBUG_STATS,
 713                         "%s RESULT tag=%lu err=%d text=%s\n",
 714                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 715                         rs->sr_text ? rs->sr_text : "", 0 );
 716         }
 717 }
 718
 719 void
 720 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 721 {
 722         rs->sr_type = REP_EXTENDED;
 723
 724         Debug( LDAP_DEBUG_TRACE,
 725                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 726                 rs->sr_err,
 727                 rs->sr_rspoid ? rs->sr_rspoid : "",
 728                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 729
 730         rs->sr_tag = slap_req2res( op->o_tag );
 731         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 732
 733         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 734                 Statslog( LDAP_DEBUG_STATS,
 735                         "%s RESULT oid=%s err=%d text=%s\n",
 736                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 737                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 738         }
 739 }
 740
 741 void
 742 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 743 {
 744         rs->sr_type = REP_INTERMEDIATE;
 745         Debug( LDAP_DEBUG_TRACE,
 746                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 747                 rs->sr_err,
 748                 rs->sr_rspoid ? rs->sr_rspoid : "",
 749                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 750         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 751         rs->sr_msgid = op->o_msgid;
 752         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 753                 Statslog( LDAP_DEBUG_STATS2,
 754                         "%s INTERM oid=%s\n",
 755                         op->o_log_prefix,
 756                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 757         }
 758 }
 759
 760 /*
 761  * returns:
 762  *
 763  * LDAP_SUCCESS                 entry sent
 764  * LDAP_OTHER                   entry not sent (other)
 765  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 766  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 767  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 768  */
 769
 770 int
 771 slap_send_search_entry( Operation *op, SlapReply *rs )
 772 {
 773         BerElementBuffer berbuf;
 774         BerElement      *ber = (BerElement *) &berbuf;
 775         Attribute       *a;
 776         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 777         int             userattrs;
 778         AccessControlState acl_state = ACL_STATE_INIT;
 779         int                      attrsonly;
 780         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 781
 782         /* a_flags: array of flags telling if the i-th element will be
 783          *          returned or filtered out
 784          * e_flags: array of a_flags
 785          */
 786         char **e_flags = NULL;
 787
 788         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 789                 return LDAP_SIZELIMIT_EXCEEDED;
 790         }
 791
 792         /* Every 64 entries, check for thread pool pause */
 793         if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
 794                 ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
 795         {
 796                 return LDAP_BUSY;
 797         }
 798
 799         rs->sr_type = REP_SEARCH;
 800
 801         /* eventually will loop through generated operational attribute types
 802          * currently implemented types include:
 803          *      entryDN, subschemaSubentry, and hasSubordinates */
 804         /* NOTE: moved before overlays callback circling because
 805          * they may modify entry and other stuff in rs */
 806         /* check for special all operational attributes ("+") type */
 807         /* FIXME: maybe we could set this flag at the operation level;
 808          * however, in principle the caller of send_search_entry() may
 809          * change the attribute list at each call */
 810         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 811
 812         rc = backend_operational( op, rs );
 813         if ( rc ) {
 814                 goto error_return;
 815         }
 816
 817         if ( op->o_callback ) {
 818                 rc = slap_response_play( op, rs );
 819                 if ( rc != SLAP_CB_CONTINUE ) {
 820                         goto error_return;
 821                 }
 822         }
 823
 824         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 825                 op->o_connid, rs->sr_entry->e_name.bv_val,
 826                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 827
 828         attrsonly = op->ors_attrsonly;
 829
 830         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 831                 Debug( LDAP_DEBUG_ACL,
 832                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 833                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 834
 835                 rc = LDAP_INSUFFICIENT_ACCESS;
 836                 goto error_return;
 837         }
 838
 839         if ( op->o_res_ber ) {
 840                 /* read back control or LDAP_CONNECTIONLESS */
 841             ber = op->o_res_ber;
 842         } else {
 843                 struct berval   bv;
 844
 845                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 846                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 847
 848                 ber_init2( ber, &bv, LBER_USE_DER );
 849                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 850         }
 851
 852 #ifdef LDAP_CONNECTIONLESS
 853         if ( op->o_conn && op->o_conn->c_is_udp ) {
 854                 /* CONNECTIONLESS */
 855                 if ( op->o_protocol == LDAP_VERSION2 ) {
 856                 rc = ber_printf(ber, "t{O{" /*}}*/,
 857                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 858                 } else {
 859                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 860                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 861                 }
 862         } else
 863 #endif
 864         if ( op->o_res_ber ) {
 865                 /* read back control */
 866             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 867         } else {
 868             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 869                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 870         }
 871
 872         if ( rc == -1 ) {
 873                 Debug( LDAP_DEBUG_ANY,
 874                         "send_search_entry: conn %lu  ber_printf failed\n",
 875                         op->o_connid, 0, 0 );
 876
 877                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 878                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 879                 rc = rs->sr_err;
 880                 goto error_return;
 881         }
 882
 883         /* check for special all user attributes ("*") type */
 884         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 885
 886         /* create an array of arrays of flags. Each flag corresponds
 887          * to particular value of attribute and equals 1 if value matches
 888          * to ValuesReturnFilter or 0 if not
 889          */
 890         if ( op->o_vrFilter != NULL ) {
 891                 int     k = 0;
 892                 size_t  size;
 893
 894                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 895                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 896                 }
 897
 898                 size = i * sizeof(char *) + k;
 899                 if ( size > 0 ) {
 900                         char    *a_flags;
 901                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 902                         if( e_flags == NULL ) {
 903                         Debug( LDAP_DEBUG_ANY,
 904                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 905                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 906                                 ber_free( ber, 1 );
 907
 908                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 909                                 goto error_return;
 910                         }
 911                         a_flags = (char *)(e_flags + i);
 912                         memset( a_flags, 0, k );
 913                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 914                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 915                                 e_flags[i] = a_flags;
 916                                 a_flags += j;
 917                         }
 918
 919                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 920                         if ( rc == -1 ) {
 921                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 922                                         "conn %lu matched values filtering failed\n",
 923                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 924                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 925                                 send_ldap_error( op, rs, LDAP_OTHER,
 926                                         "matched values filtering error" );
 927                                 rc = rs->sr_err;
 928                                 goto error_return;
 929                         }
 930                 }
 931         }
 932
 933         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 934                 AttributeDescription *desc = a->a_desc;
 935                 int finish = 0;
 936
 937                 if ( rs->sr_attrs == NULL ) {
 938                         /* all user attrs request, skip operational attributes */
 939                         if( is_at_operational( desc->ad_type ) ) {
 940                                 continue;
 941                         }
 942
 943                 } else {
 944                         /* specific attrs requested */
 945                         if ( is_at_operational( desc->ad_type ) ) {
 946                                 /* if not explicitly requested */
 947                                 if ( !ad_inlist( desc, rs->sr_attrs )) {
 948                                         /* if not all op attrs requested, skip */
 949                                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
 950                                                 continue;
 951                                         /* if DSA-specific and replicating, skip */
 952                                         if ( op->o_sync != SLAP_CONTROL_NONE &&
 953                                                 desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
 954                                                 continue;
 955                                 }
 956                         } else {
 957                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 958                                         continue;
 959                                 }
 960                         }
 961                 }
 962
 963                 if ( attrsonly ) {
 964                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 965                                 ACL_READ, &acl_state ) )
 966                         {
 967                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 968                                         "conn %lu access to attribute %s not allowed\n",
 969                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 970                                 continue;
 971                         }
 972
 973                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 974                                 Debug( LDAP_DEBUG_ANY,
 975                                         "send_search_entry: conn %lu  ber_printf failed\n",
 976                                         op->o_connid, 0, 0 );
 977
 978                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 979                                 send_ldap_error( op, rs, LDAP_OTHER,
 980                                         "encoding description error");
 981                                 rc = rs->sr_err;
 982                                 goto error_return;
 983                         }
 984                         finish = 1;
 985
 986                 } else {
 987                         int first = 1;
 988                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
 989                                 if ( ! access_allowed( op, rs->sr_entry,
 990                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
 991                                 {
 992                                         Debug( LDAP_DEBUG_ACL,
 993                                                 "send_search_entry: conn %lu "
 994                                                 "access to attribute %s, value #%d not allowed\n",
 995                                                 op->o_connid, desc->ad_cname.bv_val, i );
 996
 997                                         continue;
 998                                 }
 999
1000                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1001                                         continue;
1002                                 }
1003
1004                                 if ( first ) {
1005                                         first = 0;
1006                                         finish = 1;
1007                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1008                                                 Debug( LDAP_DEBUG_ANY,
1009                                                         "send_search_entry: conn %lu  ber_printf failed\n",
1010                                                         op->o_connid, 0, 0 );
1011
1012                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1013                                                 send_ldap_error( op, rs, LDAP_OTHER,
1014                                                         "encoding description error");
1015                                                 rc = rs->sr_err;
1016                                                 goto error_return;
1017                                         }
1018                                 }
1019                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1020                                         Debug( LDAP_DEBUG_ANY,
1021                                                 "send_search_entry: conn %lu  "
1022                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
1023
1024                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1025                                         send_ldap_error( op, rs, LDAP_OTHER,
1026                                                 "encoding values error" );
1027                                         rc = rs->sr_err;
1028                                         goto error_return;
1029                                 }
1030                         }
1031                 }
1032
1033                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1034                         Debug( LDAP_DEBUG_ANY,
1035                                 "send_search_entry: conn %lu ber_printf failed\n",
1036                                 op->o_connid, 0, 0 );
1037
1038                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1039                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1040                         rc = rs->sr_err;
1041                         goto error_return;
1042                 }
1043         }
1044
1045         /* NOTE: moved before overlays callback circling because
1046          * they may modify entry and other stuff in rs */
1047         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1048                 int     k = 0;
1049                 size_t  size;
1050
1051                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1052                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1053                 }
1054
1055                 size = i * sizeof(char *) + k;
1056                 if ( size > 0 ) {
1057                         char    *a_flags, **tmp;
1058
1059                         /*
1060                          * Reuse previous memory - we likely need less space
1061                          * for operational attributes
1062                          */
1063                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1064                                 op->o_tmpmemctx );
1065                         if ( tmp == NULL ) {
1066                                 Debug( LDAP_DEBUG_ANY,
1067                                         "send_search_entry: conn %lu "
1068                                         "not enough memory "
1069                                         "for matched values filtering\n",
1070                                         op->o_connid, 0, 0 );
1071                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1072                                 send_ldap_error( op, rs, LDAP_OTHER,
1073                                         "not enough memory for matched values filtering" );
1074                                 goto error_return;
1075                         }
1076                         e_flags = tmp;
1077                         a_flags = (char *)(e_flags + i);
1078                         memset( a_flags, 0, k );
1079                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1080                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1081                                 e_flags[i] = a_flags;
1082                                 a_flags += j;
1083                         }
1084                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1085
1086                         if ( rc == -1 ) {
1087                                 Debug( LDAP_DEBUG_ANY,
1088                                         "send_search_entry: conn %lu "
1089                                         "matched values filtering failed\n",
1090                                         op->o_connid ? op->o_connid : 0, 0, 0);
1091                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1092                                 send_ldap_error( op, rs, LDAP_OTHER,
1093                                         "matched values filtering error" );
1094                                 rc = rs->sr_err;
1095                                 goto error_return;
1096                         }
1097                 }
1098         }
1099
1100         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1101                 AttributeDescription *desc = a->a_desc;
1102
1103                 if ( rs->sr_attrs == NULL ) {
1104                         /* all user attrs request, skip operational attributes */
1105                         if( is_at_operational( desc->ad_type ) ) {
1106                                 continue;
1107                         }
1108
1109                 } else {
1110                         /* specific attrs requested */
1111                         if( is_at_operational( desc->ad_type ) ) {
1112                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1113                                         !ad_inlist( desc, rs->sr_attrs ) )
1114                                 {
1115                                         continue;
1116                                 }
1117                         } else {
1118                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1119                                         continue;
1120                                 }
1121                         }
1122                 }
1123
1124                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1125                         ACL_READ, &acl_state ) )
1126                 {
1127                         Debug( LDAP_DEBUG_ACL,
1128                                 "send_search_entry: conn %lu "
1129                                 "access to attribute %s not allowed\n",
1130                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1131
1132                         continue;
1133                 }
1134
1135                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1136                 if ( rc == -1 ) {
1137                         Debug( LDAP_DEBUG_ANY,
1138                                 "send_search_entry: conn %lu  "
1139                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1140
1141                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1142                         send_ldap_error( op, rs, LDAP_OTHER,
1143                                 "encoding description error" );
1144                         rc = rs->sr_err;
1145                         goto error_return;
1146                 }
1147
1148                 if ( ! attrsonly ) {
1149                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1150                                 if ( ! access_allowed( op, rs->sr_entry,
1151                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1152                                 {
1153                                         Debug( LDAP_DEBUG_ACL,
1154                                                 "send_search_entry: conn %lu "
1155                                                 "access to %s, value %d not allowed\n",
1156                                                 op->o_connid, desc->ad_cname.bv_val, i );
1157
1158                                         continue;
1159                                 }
1160
1161                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1162                                         continue;
1163                                 }
1164
1165                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1166                                         Debug( LDAP_DEBUG_ANY,
1167                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1168                                                 op->o_connid, 0, 0 );
1169
1170                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1171                                         send_ldap_error( op, rs, LDAP_OTHER,
1172                                                 "encoding values error" );
1173                                         rc = rs->sr_err;
1174                                         goto error_return;
1175                                 }
1176                         }
1177                 }
1178
1179                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1180                         Debug( LDAP_DEBUG_ANY,
1181                                 "send_search_entry: conn %lu  ber_printf failed\n",
1182                                 op->o_connid, 0, 0 );
1183
1184                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1185                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1186                         rc = rs->sr_err;
1187                         goto error_return;
1188                 }
1189         }
1190
1191         /* free e_flags */
1192         if ( e_flags ) {
1193                 slap_sl_free( e_flags, op->o_tmpmemctx );
1194                 e_flags = NULL;
1195         }
1196
1197         rc = ber_printf( ber, /*{{*/ "}N}" );
1198
1199         if( rc != -1 ) {
1200                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1201         }
1202
1203         if( rc != -1 ) {
1204 #ifdef LDAP_CONNECTIONLESS
1205                 if( op->o_conn && op->o_conn->c_is_udp ) {
1206                         if ( op->o_protocol != LDAP_VERSION2 ) {
1207                                 rc = ber_printf( ber, /*{*/ "N}" );
1208                         }
1209                 } else
1210 #endif
1211                 if ( op->o_res_ber == NULL ) {
1212                         rc = ber_printf( ber, /*{*/ "N}" );
1213                 }
1214         }
1215
1216         if ( rc == -1 ) {
1217                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1218
1219                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1220                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1221                 rc = rs->sr_err;
1222                 goto error_return;
1223         }
1224
1225         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1226             op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
1227
1228         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1229                 be_entry_release_rw( op, rs->sr_entry, 0 );
1230                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1231                 rs->sr_entry = NULL;
1232         }
1233
1234         if ( op->o_res_ber == NULL ) {
1235                 bytes = send_ldap_ber( op->o_conn, ber );
1236                 ber_free_buf( ber );
1237
1238                 if ( bytes < 0 ) {
1239                         Debug( LDAP_DEBUG_ANY,
1240                                 "send_search_entry: conn %lu  ber write failed.\n",
1241                                 op->o_connid, 0, 0 );
1242
1243                         rc = LDAP_UNAVAILABLE;
1244                         goto error_return;
1245                 }
1246                 rs->sr_nentries++;
1247
1248                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1249                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1250                 ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 );
1251                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1252                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1253         }
1254
1255         Debug( LDAP_DEBUG_TRACE,
1256                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1257
1258         rc = LDAP_SUCCESS;
1259
1260 error_return:;
1261         if ( op->o_callback ) {
1262                 (void)slap_cleanup_play( op, rs );
1263         }
1264
1265         if ( e_flags ) {
1266                 slap_sl_free( e_flags, op->o_tmpmemctx );
1267         }
1268
1269         if ( rs->sr_operational_attrs ) {
1270                 attrs_free( rs->sr_operational_attrs );
1271                 rs->sr_operational_attrs = NULL;
1272         }
1273         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1274
1275         /* FIXME: I think rs->sr_type should be explicitly set to
1276          * REP_SEARCH here. That's what it was when we entered this
1277          * function. send_ldap_error may have changed it, but we
1278          * should set it back so that the cleanup functions know
1279          * what they're doing.
1280          */
1281         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1282                 && rs->sr_entry
1283                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1284         {
1285                 entry_free( rs->sr_entry );
1286                 rs->sr_entry = NULL;
1287                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1288         }
1289
1290         return( rc );
1291 }
1292
1293 int
1294 slap_send_search_reference( Operation *op, SlapReply *rs )
1295 {
1296         BerElementBuffer berbuf;
1297         BerElement      *ber = (BerElement *) &berbuf;
1298         int rc = 0;
1299         int bytes;
1300         char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
1301
1302         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1303         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1304
1305         rs->sr_type = REP_SEARCHREF;
1306         if ( op->o_callback ) {
1307                 rc = slap_response_play( op, rs );
1308                 if ( rc != SLAP_CB_CONTINUE ) {
1309                         goto rel;
1310                 }
1311         }
1312
1313         Debug( LDAP_DEBUG_TRACE,
1314                 "=> send_search_reference: dn=\"%s\"\n",
1315                 edn, 0, 0 );
1316
1317         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1318                 ad_entry, NULL, ACL_READ, NULL ) )
1319         {
1320                 Debug( LDAP_DEBUG_ACL,
1321                         "send_search_reference: access to entry not allowed\n",
1322                     0, 0, 0 );
1323                 rc = 1;
1324                 goto rel;
1325         }
1326
1327         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1328                 ad_ref, NULL, ACL_READ, NULL ) )
1329         {
1330                 Debug( LDAP_DEBUG_ACL,
1331                         "send_search_reference: access "
1332                         "to reference not allowed\n",
1333                     0, 0, 0 );
1334                 rc = 1;
1335                 goto rel;
1336         }
1337
1338         if( op->o_domain_scope ) {
1339                 Debug( LDAP_DEBUG_ANY,
1340                         "send_search_reference: domainScope control in (%s)\n",
1341                         edn, 0, 0 );
1342                 rc = 0;
1343                 goto rel;
1344         }
1345
1346         if( rs->sr_ref == NULL ) {
1347                 Debug( LDAP_DEBUG_ANY,
1348                         "send_search_reference: null ref in (%s)\n",
1349                         edn, 0, 0 );
1350                 rc = 1;
1351                 goto rel;
1352         }
1353
1354         if( op->o_protocol < LDAP_VERSION3 ) {
1355                 rc = 0;
1356                 /* save the references for the result */
1357                 if( rs->sr_ref[0].bv_val != NULL ) {
1358                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1359                                 rc = LDAP_OTHER;
1360                 }
1361                 goto rel;
1362         }
1363
1364 #ifdef LDAP_CONNECTIONLESS
1365         if( op->o_conn && op->o_conn->c_is_udp ) {
1366                 ber = op->o_res_ber;
1367         } else
1368 #endif
1369         {
1370                 ber_init_w_nullc( ber, LBER_USE_DER );
1371                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1372         }
1373
1374         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1375                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1376
1377         if( rc != -1 ) {
1378                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1379         }
1380
1381         if( rc != -1 ) {
1382                 rc = ber_printf( ber, /*"{"*/ "N}" );
1383         }
1384
1385         if ( rc == -1 ) {
1386                 Debug( LDAP_DEBUG_ANY,
1387                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1388
1389 #ifdef LDAP_CONNECTIONLESS
1390                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1391 #endif
1392                 ber_free_buf( ber );
1393                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1394                 goto rel;
1395         }
1396
1397         rc = 0;
1398         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1399                 assert( rs->sr_entry != NULL );
1400                 be_entry_release_rw( op, rs->sr_entry, 0 );
1401                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1402                 rs->sr_entry = NULL;
1403         }
1404
1405 #ifdef LDAP_CONNECTIONLESS
1406         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1407 #endif
1408         bytes = send_ldap_ber( op->o_conn, ber );
1409         ber_free_buf( ber );
1410
1411         if ( bytes < 0 ) {
1412                 rc = LDAP_UNAVAILABLE;
1413         } else {
1414                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1415                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1416                 ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
1417                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1418                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1419         }
1420 #ifdef LDAP_CONNECTIONLESS
1421         }
1422 #endif
1423         if ( rs->sr_ref != NULL ) {
1424                 int     r;
1425
1426                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1427                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1428                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1429                                 0, 0 );
1430                 }
1431
1432         } else {
1433                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1434                         op->o_log_prefix, 0, 0, 0, 0 );
1435         }
1436
1437         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1438
1439 rel:
1440         if ( op->o_callback ) {
1441                 (void)slap_cleanup_play( op, rs );
1442         }
1443
1444         return rc;
1445 }
1446
1447 int
1448 str2result(
1449     char        *s,
1450     int         *code,
1451     char        **matched,
1452     char        **info )
1453 {
1454         int     rc;
1455         char    *c;
1456
1457         *code = LDAP_SUCCESS;
1458         *matched = NULL;
1459         *info = NULL;
1460
1461         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1462                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1463                     s, 0, 0 );
1464
1465                 return( -1 );
1466         }
1467
1468         rc = 0;
1469         while ( (s = strchr( s, '\n' )) != NULL ) {
1470                 *s++ = '\0';
1471                 if ( *s == '\0' ) {
1472                         break;
1473                 }
1474                 if ( (c = strchr( s, ':' )) != NULL ) {
1475                         c++;
1476                 }
1477
1478                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1479                         char    *next = NULL;
1480                         long    retcode;
1481
1482                         if ( c == NULL ) {
1483                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1484                                     s, 0, 0 );
1485                                 rc = -1;
1486                                 continue;
1487                         }
1488
1489                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1490                         if ( c[ 0 ] == '\0' ) {
1491                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1492                                     s, 0, 0 );
1493                                 rc = -1;
1494                                 continue;
1495                         }
1496
1497                         retcode = strtol( c, &next, 10 );
1498                         if ( next == NULL || next == c ) {
1499                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1500                                     s, 0, 0 );
1501                                 rc = -1;
1502                                 continue;
1503                         }
1504
1505                         while ( isspace( (unsigned char) next[ 0 ] ) ) next++;
1506                         if ( next[ 0 ] != '\0' ) {
1507                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1508                                     s, 0, 0 );
1509                                 rc = -1;
1510                                 continue;
1511                         }
1512
1513                         /* FIXME: what if it's larger that max int? */
1514                         *code = (int)retcode;
1515
1516                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1517                         if ( c != NULL ) {
1518                                 *matched = c;
1519                         }
1520                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1521                         if ( c != NULL ) {
1522                                 *info = c;
1523                         }
1524                 } else {
1525                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1526                             s, 0, 0 );
1527
1528                         rc = -1;
1529                 }
1530         }
1531
1532         return( rc );
1533 }
1534
1535 int slap_read_controls(
1536         Operation *op,
1537         SlapReply *rs,
1538         Entry *e,
1539         const struct berval *oid,
1540         LDAPControl **ctrl )
1541 {
1542         int rc;
1543         struct berval bv;
1544         BerElementBuffer berbuf;
1545         BerElement *ber = (BerElement *) &berbuf;
1546         LDAPControl c;
1547         Operation myop;
1548
1549         Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
1550                 op->o_log_prefix, oid->bv_val, e->e_dn );
1551
1552         rs->sr_entry = e;
1553         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1554                 op->o_preread_attrs : op->o_postread_attrs;
1555
1556         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1557         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1558
1559         ber_init2( ber, &bv, LBER_USE_DER );
1560         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1561
1562         /* create new operation */
1563         myop = *op;
1564         /* FIXME: o_bd needed for ACL */
1565         myop.o_bd = op->o_bd;
1566         myop.o_res_ber = ber;
1567         myop.o_callback = NULL;
1568         myop.ors_slimit = 1;
1569
1570         rc = slap_send_search_entry( &myop, rs );
1571         if( rc ) return rc;
1572
1573         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1574
1575         if( rc == -1 ) return LDAP_OTHER;
1576
1577         c.ldctl_oid = oid->bv_val;
1578         c.ldctl_iscritical = 0;
1579
1580         if ( *ctrl == NULL ) {
1581                 /* first try */
1582                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1583         } else {
1584                 /* retry: free previous try */
1585                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1586         }
1587
1588         **ctrl = c;
1589         return LDAP_SUCCESS;
1590 }
1591
1592 /* Map API errors to protocol errors... */
1593 int
1594 slap_map_api2result( SlapReply *rs )
1595 {
1596         switch(rs->sr_err) {
1597         case LDAP_SERVER_DOWN:
1598                 return LDAP_UNAVAILABLE;
1599         case LDAP_LOCAL_ERROR:
1600                 return LDAP_OTHER;
1601         case LDAP_ENCODING_ERROR:
1602         case LDAP_DECODING_ERROR:
1603                 return LDAP_PROTOCOL_ERROR;
1604         case LDAP_TIMEOUT:
1605                 return LDAP_UNAVAILABLE;
1606         case LDAP_AUTH_UNKNOWN:
1607                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1608         case LDAP_FILTER_ERROR:
1609                 rs->sr_text = "Filter error";
1610                 return LDAP_OTHER;
1611         case LDAP_USER_CANCELLED:
1612                 rs->sr_text = "User cancelled";
1613                 return LDAP_OTHER;
1614         case LDAP_PARAM_ERROR:
1615                 return LDAP_PROTOCOL_ERROR;
1616         case LDAP_NO_MEMORY:
1617                 return LDAP_OTHER;
1618         case LDAP_CONNECT_ERROR:
1619                 return LDAP_UNAVAILABLE;
1620         case LDAP_NOT_SUPPORTED:
1621                 return LDAP_UNWILLING_TO_PERFORM;
1622         case LDAP_CONTROL_NOT_FOUND:
1623                 return LDAP_PROTOCOL_ERROR;
1624         case LDAP_NO_RESULTS_RETURNED:
1625                 return LDAP_NO_SUCH_OBJECT;
1626         case LDAP_MORE_RESULTS_TO_RETURN:
1627                 rs->sr_text = "More results to return";
1628                 return LDAP_OTHER;
1629         case LDAP_CLIENT_LOOP:
1630         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1631                 return LDAP_LOOP_DETECT;
1632         default:
1633                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1634                 return rs->sr_err;
1635         }
1636 }
1637
1638
1639 slap_mask_t
1640 slap_attr_flags( AttributeName *an )
1641 {
1642         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1643
1644         if ( an == NULL ) {
1645                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1646
1647         } else {
1648                 flags |= an_find( an, &AllOper )
1649                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1650                 flags |= an_find( an, &AllUser )
1651                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1652         }
1653
1654         return flags;
1655 }
1656